S
M
T
W
T
F
S
30
66°
57°
31
70°
51°
1
70°
60°
2
69°
55°
3
64°
54°
4
63°
52°
5
66°
52°
6
69°
57°
7
70°
58°
8
65°
57°
9
69°
56°
10
68°
56°
11
67°
56°
12
66°
55°
13
67°
55°
14
64°
51°
15
65°
54°
16
61°
55°
17
61°
55°
18
62°
54°
19
60°
54°
20
59°
52°
21
59°
50°
22
60°
51°
23
58°
47°
24
58°
47°
25
60°
48°
26
61°
51°
27
64°
53°
28
61°
52°
29
58°
50°
30
62°
51°
1
61°
52°
2
58°
51°
3
60°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richmond
Richmond's September 2026 forecast shows daily high temperatures ranging from 58° to 70°, with overnight lows between 47° and 60°. The average high for September is 63° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Richmond. See also: October | November | December.